Ball-cage for ball-bearings.



H. KAPPER.

BALL GAGE FOR BALL BEARINGS.

APPLICATION PILVED PEBJO, 1912.

1,026,749. 7 Patented May 21, 1912.

UNITED STAT HERMANN KAPPER, OF TREPTOW, NEAR BERLIN, GERMANY, ASSIGNOR} TO THE FIRM 0F DEUTSCHE WAFFEN & MUNITIONSFABRIKEN, 0F BERLIN, GERMANY.

- BAIiL-CAGE roe BALL-BEARINGS.

Patented May 21, 1912.

Application filed February 10, 1912. Serial No. 676,838. I

To all whom it may concern:

Be it known that I, HERMANN KAPPER, a subject of the German Emperor, and re siding at Treptow, near Berlin, Germany,

have invented certain new and useful 11nprovements in Ball-Cages for Ball-Bearings, of which the following is a specification. 1

My invention relates to those ball-cages ot ball-bearings in which the upper and lower rings of the. cage are connected by intermediate members. Various forms of such cages are well-known in themselves; some of them comprise distance pieces provided with pivot-like projections which are passed through holes in the rings and then upset. As the upper and lower rings are connected in such cages solely by the pivot-- like projections of the distance pieces the well-known cages have the defectthat the distance pieces are readily torn outof their seats and.-the bearing is exposed to the danger'of being seriously inyui'ed.

A primary object of my ina-ention is to obviate this defect.

To this end, my invention consists in the parts, improvements and combinations more particularly described hereinafter and pointed out in the claims.

One illustrative embodiment of my invention .is represented byway of exam le in the'accompanying drawing, wherein Figure 1 is a top plan view, partly in horizontal sect-ion taken on the line A-B in Fig. 2, and Fig. 2 a front elevation, partly in vertical section taken on the bent line CD in Fig. 1; Fig.3 is a vertical section taken on the line EF in Fig. 1, Fig. 4 a like view on the line G-I-I in Fig. 1, and Figs. 5 and 6 show a distance piece in elevation and cross-section, respectively.

Referring to the drawing, my improved ball-cage comprises an upper and a lower ring a; and b, respectively, each of which consists of a base part 0 having outwardlydirected'fiange-like edges 6 and d. The parts 0 are provided with known recesses f and with slots 9 which receive the lugs Copies 0! this patent may b6 obtained for tance pieces 71, are shown curved and each terminates on both sides in flanges Z having hooked ends a and b respectively engaging the edges d and e.

Owing to the above described new mode of attaching the distance pieces hby means of the bent flanges Z my improved cage has the advantage, as compared with cages known heretofore, that in view of the forces exercised by the balls being taken up, the

' lugs let into the base parts are for the mostpart relieved, so that the upper and lower rings a, b are connected by means of the distance pieces h in such a strong. and se\ cure manner that practical requirements are sufliciently met in every respect.

The cross-section of the distance pieces it may, of course, be of any desired shape notimpairing the motion of the balls, while the distance of the distance pieces one from an-v other depends solely on the number of balls. V Vhen the number of balls is large and the cross-section of the distance pieces it suits able, owing to the firm connection of the upper and lower rings one distance piece h between each two balls is su'liicient.

I claim 1. In a ball-cage, the combination with an upper and a lower ring each having a plurality of slots arranged one opposite an: other, of a plurality of distance pieces disposed between the rings, each of said distance pieces having lugs entering into the I slots in the rings and having hooked por tions engaging the edges of the rings.

2. In a ball-cage, the combination of an upper and a lower ring each having outwardly projecting edges and a plurality of slots one opposite another, and a plurality of laterally flanged distance pieces disposed bet-ween the rings, each of said d stance pieces having two lugs enteringinto opposite slots in the rings, and the lateral iianges having hooked port-ions engaging the said edges of the rings.

In testimony whereof, I affix my signature in the presence of two witnesses.

' HERMANN KAPPER.

Witnesses:

WOLDEMAR HAUPT, HENRY HAsPnR.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

